Chlorobium chlorochromatii

Chlorobium chlorochromatii, originally known as Chlorobium aggregatum, is a symbiotic green sulfur bacteria that performs anoxygenic photosynthesis and functions as an obligate photoautotroph using reduced sulfur species as electron donors. Chlorobium chlorochromatii can be found in stratified freshwater lakes.^[2]

Topic morphology

C. chlorochromatii is a Gram-negative, non-motile bacillus, that exist in short chains. They are green in color and have a ring of

Photosynthetic green sulfur bacteria such as Chlorobium chlorochromatii reside in freshwater, stratified lakes beneath the micro-aerophilic algal layer in anaerobic, light-exposed environments. They have been found worldwide, mostly in holomictic or meromictic stratified lakes. Lakes that support this environment have been found in Germany, Tasmania, the USA, ice-covered lakes in Antarctica, Israel and Japan.^[2] Chlorobium chlorochromatii prefer environments with low temperature and low sulfur concentrations.

Symbiosis

Chlorobium chlorochromatii, strain CaD, was originally isolated from the phototrophic microbial consortium Chlorochromatium aggregatum. The ability of this epibiont to grow in pure culture indicates that it is not an obligately symbiotic organism.^[3] Despite this fact, C. chlorochromatii has never been found in a free-living state in naturally occurring bacterial communities.^[4]

Metabolism

C. chlorochromatii conducts